651256222 has 4 divisors (see below), whose sum is σ = 976884336. Its totient is φ = 325628110.

The previous prime is 651256211. The next prime is 651256241. The reversal of 651256222 is 222652156.

It is a happy number.

651256222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162814054 + ... + 162814057.

It is an arithmetic number, because the mean of its divisors is an integer number (244221084).

Almost surely, 2^651256222 is an apocalyptic number.

651256222 is a deficient number, since it is larger than the sum of its proper divisors (325628114).

651256222 is a wasteful number, since it uses less digits than its factorization.

651256222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325628113.

The product of its digits is 14400, while the sum is 31.

The square root of 651256222 is about 25519.7222163565. The cubic root of 651256222 is about 866.7967916712.

The spelling of 651256222 in words is "six hundred fifty-one million, two hundred fifty-six thousand, two hundred twenty-two".